Home / 79,386.48-119,075.54-20,218.55

Finding the Fourth Proportional to 79,386.48, 119,075.54 and 20,218.55

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Solution

The fourth proportional to 79,386.48, 119,075.54 and 20,218.55 is: 30,326.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,386.48 : 119,075.54 = 20,218.55 : x
  2. Step 2: Convert to fraction form
    79,386.48/119,075.54 = 20,218.55/x
  3. Step 3: Cross multiply
    79,386.48x = 119,075.54 × 20,218.55
  4. Step 4: Simplify right side
    79,386.48x = 2,407,534,062.80
  5. Step 5: Solve for x
    x = 2,407,534,062.80/79,386.48
  6. Step 6: Final answer
    x = 30,326.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.